Why It Matters
The 340-hp 425 became an optional Riviera engine after the model-year introduction.
Also Known As
425 Riviera option
Part profile
1963 Buick Wildcat 465 option
option · Buick
Used On
1 linked car page.
two-door pillarless sport coupe
1963 Buick Riviera
Model 4747 sport coupe